EP1048943A3 - Map preparing method used for engine testing apparatus or vehicle testing apparatus, and engine testing apparatus - Google Patents

Map preparing method used for engine testing apparatus or vehicle testing apparatus, and engine testing apparatus Download PDF

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Publication number
EP1048943A3
EP1048943A3 EP00108865A EP00108865A EP1048943A3 EP 1048943 A3 EP1048943 A3 EP 1048943A3 EP 00108865 A EP00108865 A EP 00108865A EP 00108865 A EP00108865 A EP 00108865A EP 1048943 A3 EP1048943 A3 EP 1048943A3
Authority
EP
European Patent Office
Prior art keywords
throttle valve
engine
testing apparatus
torque
curves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00108865A
Other languages
German (de)
French (fr)
Other versions
EP1048943A2 (en
Inventor
Hideki c/o Horiba Ltd. Nakanishi
Shinji c/o Horiba Ltd. Noguchi
Yasuhiro c/o Horiba Ltd. Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Horiba Ltd
Original Assignee
Horiba Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP11123874A external-priority patent/JP2000314682A/en
Priority claimed from JP13426099A external-priority patent/JP4189083B2/en
Priority claimed from JP13430299A external-priority patent/JP3645743B2/en
Application filed by Horiba Ltd filed Critical Horiba Ltd
Priority to EP09000579A priority Critical patent/EP2045592A1/en
Publication of EP1048943A2 publication Critical patent/EP1048943A2/en
Publication of EP1048943A3 publication Critical patent/EP1048943A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G01M15/048—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G01M15/044—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Engines (AREA)

Abstract

This invention provides a map preparing method used for an engine testing apparatus or a vehicle testing apparatus capable of preventing a peculiar driving state from being generated.
This invention provides a map preparing method used for an engine testing apparatus or a vehicle testing apparatus comprising the steps of: varying a throttle valve from its fully closed position to its fully opened position while keeping rotation of an engine constantly, carrying out operation for storing an output torque Nm at that time using at least three kinds of different engine rotation number, determining each of obtained torque curves A∼ E as actual machine data, and preparing a map based on the actual machine date, characterized by comprising the steps of: describing each of the torque curves A ∼E on the same X-Y plane when a map is prepared based on the actual machine data; converting actual machine data function for describing torque approximate curves a ∼ e with respect to throttle opening degrees (X axis) on the same X-Y plane while making approximations to the torque curves; judging whether there exists intersection of torque approximate curves a ∼ e; and automatically correcting one of the torque approximate curves c which can be judged as peculiar such that a value Y1 of y-piece of the torque approximate curve c which is seemed to be peculiar among the intersecting torque approximate curves b,c in the judging step assumes a medium value Y2 , Y3 of values of y-pieces of each of the vertically adjacent torque approximate curves b,d.
And this invention provides a map preparing method used for an engine testing apparatus or a vehicle testing apparatus capable of enhancing the simulation accuracy.
This invention provides a map preparing method used for an engine testing apparatus or a vehicle testing apparatus comprising the steps of: calculating an average value in throttle valve opening direction S and an average value in throttle valve closing direction G from variation of the throttle valve operation speed 33; determining the average value of the throttle valve in the throttle valve opening direction S obtained by the calculation as a representative value corresponding to the throttle valve operating in the throttle valve opening direction in a mode driving, operating the throttle valve in its opening direction in a state where the engine rotation number is made constant by this representative value and describing the torque curves 35 with a plurality of different engine rotation number, and preparing a map in the throttle valve opening direction based on the obtained torque curves 35, determining the average value of the throttle valve in the throttle valve closing direction G obtained by the calculation as a representative value corresponding to the throttle valve operating in the throttle valve closing direction in a mode driving, operating the throttle valve in its closing direction in a state where the engine rotation number is made constant by this representative value G and describing the torque curves 36 with a plurality of different engine rotation number, and preparing a map in the throttle valve closing direction based on the obtained torque curves 36.
And also this invention provides an engine testing apparatus capable of carry out a simulation of an actual vehicle running with high accuracy.
This invention provides an engine testing apparatus comprising a dynamometer 3 connected to an output section 2a of an engine 2 under test which is to be tested, a dynamo controller 3' for controlling the dynamometer 3, and an actuator 5 for controlling a throttle opening degree of the engine 2 under test, the dynamo controller 3' and the actuator 5 are controlled to adjust an output of the engine 2 under test, wherein commands based on a temperature pattern 58 obtained based on temperature data of various portions around the engine obtained when an actual vehicle running is tested in accordance with a running pattern on a chassis dynamo from an apparatus for controlling the entire apparatus to various temperature adjusting devices 51 provided around the engine 2 under test.
EP00108865A 1999-04-30 2000-04-26 Map preparing method used for engine testing apparatus or vehicle testing apparatus, and engine testing apparatus Withdrawn EP1048943A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09000579A EP2045592A1 (en) 1999-04-30 2000-04-26 Vehicle or engine testing apparatus

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP11123874A JP2000314682A (en) 1999-04-30 1999-04-30 Engine test device
JP12387499 1999-04-30
JP13426099 1999-05-14
JP13426099A JP4189083B2 (en) 1999-05-14 1999-05-14 Method for creating map for use in engine test apparatus or vehicle test apparatus
JP13430299 1999-05-14
JP13430299A JP3645743B2 (en) 1999-05-14 1999-05-14 Method for creating map for use in engine test apparatus or vehicle test apparatus

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP09000579A Division EP2045592A1 (en) 1999-04-30 2000-04-26 Vehicle or engine testing apparatus

Publications (2)

Publication Number Publication Date
EP1048943A2 EP1048943A2 (en) 2000-11-02
EP1048943A3 true EP1048943A3 (en) 2007-09-05

Family

ID=27314817

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00108865A Withdrawn EP1048943A3 (en) 1999-04-30 2000-04-26 Map preparing method used for engine testing apparatus or vehicle testing apparatus, and engine testing apparatus
EP09000579A Withdrawn EP2045592A1 (en) 1999-04-30 2000-04-26 Vehicle or engine testing apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09000579A Withdrawn EP2045592A1 (en) 1999-04-30 2000-04-26 Vehicle or engine testing apparatus

Country Status (2)

Country Link
US (2) US6662637B1 (en)
EP (2) EP1048943A3 (en)

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
AT6235U3 (en) * 2003-02-28 2004-01-26 Avl List Gmbh METHOD FOR CONTROLLING A TEST BENCH
US6918287B2 (en) * 2003-08-25 2005-07-19 James M. Laws Method and apparatus for measuring the acceleration of an engine
DE10345615A1 (en) * 2003-09-29 2005-05-19 Robert Bosch Gmbh System and method for testing control operations on a vehicle
AT7889U3 (en) * 2005-06-15 2006-12-15 Avl List Gmbh METHOD FOR TESTING A DYNAMIC TORQUE GENERATOR AND DEVICE FOR DETERMINING THE DYNAMIC BEHAVIOR OF A CONNECTION SHAFT
DE102007031110B4 (en) * 2007-07-04 2011-01-27 Audi Ag Method and arrangement for fully automatic functional testing of internal combustion engines
JP4644722B2 (en) * 2008-03-31 2011-03-02 日立建機株式会社 Electric drive vehicle
KR101047036B1 (en) * 2009-10-16 2011-07-06 한국과학기술원 Online electric vehicle energy consumption measurement device and method thereof
US8186206B2 (en) 2010-04-16 2012-05-29 Avl North America Inc. Polymer base for hybrid powertrain and NVH test installations
CN103471749B (en) * 2013-08-29 2015-08-19 北京宇航系统工程研究所 A kind of method measured valve assembling moment and relax
JP6132722B2 (en) * 2013-09-24 2017-05-24 株式会社堀場製作所 Driving mode display device and vehicle mode display program
DE112016005148T5 (en) * 2015-12-08 2018-07-26 Scania Cv Ab METHOD AND SYSTEM FOR CONTROLLING A SHUTTERING TORQUE OF AN ELECTRICAL MACHINE IN A VEHICLE
JP7305492B2 (en) * 2019-09-11 2023-07-10 株式会社Subaru Mode driving assistance system for vehicles
CN111458153A (en) * 2020-03-24 2020-07-28 浙江飞碟汽车制造有限公司 Zero-torque rack of pure electric vehicle motor and testing method thereof
CN112484075B (en) * 2020-12-01 2023-04-21 中国航发沈阳发动机研究所 Combustion chamber outlet temperature field correction method
CN114676493A (en) * 2021-05-19 2022-06-28 北京新能源汽车股份有限公司 Motor model selection method, device and system
CN113848006B (en) * 2021-09-26 2024-02-06 上汽通用五菱汽车股份有限公司 Acceleration demand torque MAP calibration method and device and readable storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195038A (en) * 1989-06-07 1993-03-16 Ono Sokki Co., Ltd. Throttle predictive controller in automatic engine tester
EP0728921A2 (en) * 1995-02-21 1996-08-28 Honda Giken Kogyo Kabushiki Kaisha Engine output control system for vehicle
EP0857958A1 (en) * 1997-02-10 1998-08-12 Angelantoni Industrie SpA System for the rapid cooling of engines on a test bench and relative device

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Publication number Priority date Publication date Assignee Title
US4466294A (en) * 1981-12-31 1984-08-21 Edi Transient driving cycle simulator test system
JPS62123329A (en) 1985-11-22 1987-06-04 Mitsubishi Electric Corp Controller for engine test
US5107815A (en) * 1990-06-22 1992-04-28 Massachusetts Institute Of Technology Variable air/fuel engine control system with closed-loop control around maximum efficiency and combination of otto-diesel throttling
JP3025978B2 (en) 1991-06-07 2000-03-27 株式会社小野測器 Engine performance recording method and apparatus in engine test apparatus
US5795992A (en) * 1995-05-18 1998-08-18 Toyota Jidosha Kabushiki Kaisha Method of testing durability of exhaust gas purification device
US5834654A (en) * 1996-03-11 1998-11-10 Mcfarland; Robert A. Torque and temperature control for a water brake dynamometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195038A (en) * 1989-06-07 1993-03-16 Ono Sokki Co., Ltd. Throttle predictive controller in automatic engine tester
EP0728921A2 (en) * 1995-02-21 1996-08-28 Honda Giken Kogyo Kabushiki Kaisha Engine output control system for vehicle
EP0857958A1 (en) * 1997-02-10 1998-08-12 Angelantoni Industrie SpA System for the rapid cooling of engines on a test bench and relative device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STAUBER R ET AL: "NEUE BMW-MOTORPRUFSTANDE ZUR SIMULATION VON HOHE UND KLIMA", MTZ MOTORTECHNISCHE ZEITSCHRIFT, VIEWEG VERLAG, WIESBADEN, DE, vol. 50, no. 11, 1 November 1989 (1989-11-01), pages 540 - 547, XP000095272, ISSN: 0024-8525 *

Also Published As

Publication number Publication date
US6834541B2 (en) 2004-12-28
US6662637B1 (en) 2003-12-16
US20040040374A1 (en) 2004-03-04
EP1048943A2 (en) 2000-11-02
EP2045592A1 (en) 2009-04-08

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